Force and Motion Pretest - chapter 10

What pulls a ball back to earth?

• Gas
• Gravity
• Friction
• Molecules

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If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

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The measure of the force of gravity on your body is your _________________

• height
• length
• weight
• age

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_____ is the force that slows and stops motion between touching objects.

• Friction
• Gravity
• Pull
• Push

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What keeps the Moon in orbit around Earth?

• Earth's rotation.
• Earth's atmosphere.
• Earth's gravity.
• Earth's shape.

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the action of moving or changing position

• force
• motion
• gravity
• distance

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Newton's third law states for every action their is an equal or opposite reaction. Which is the best example

• The air rushing out of a balloon, causing it to move across the room. 
• Flying forward in you seat when the brakes a slammed on.
• A weight lifter dropping the bar.
• A softball flying on the air

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Looking at the roller coaster, were does the cart have the most potential energy?

• A
• B
• C
• D

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What is the definition of acceleration?

• Change in speed or direction
• displacement divided by time
• the amount of distance covered in a certain amount of time
• An object at rest

What is the net force shown in the diagram?

• 50N right
• 950N
• 50N left
• 150N left

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